DFU sdk 12.2.0 (s130) nrf51822 QxxAA

[mohsen]

can i use dfu secure bootloder for nrf51822 QxxAA ? if yes please help me how ?

[uriy]

Unfortunatelly it doesn't solve my problem. Bootloader and my app works fine on NRF51-DK. Now I'm porting it to QFAA chip with 16KB of RAM. In my case was required to set IRAM1 0x200025F0 : 0x1A10. Bootloader works in QFAA chip, I am able to send new firmware over nrfConnect but new app doesn't start. After firmware upgrade it's again in bootloader. Bootloader logs attached. Another problem that I see logs only when #define NRF_LOG_DEFERRED 0. If I set #define NRF_LOG_DEFERRED 1 logs are silent boot_log.txt

[Roger Clark]

Interesting.

I am at about the same stage as you are.

It took me a while to find the original post about changing the RAM size, and I posted asking that the SDK or docs be updated to show the correct amount of RAM so it worked on both QFAC and QFAA.

But I have not had time to actually upload any code.

One thing I read however, ( and I now cant find a link to it on this site), was that if I want to still upload via the debugger, is that some compile settings need to be changed. Possibly the flash start address

And I dont know whether its also necessary to change those settings for the OTA upload

[uriy]

I think no need to change application start address. Because it's always located above softdevice. For bootloader (In my opinion) we can set start address as small as possible. When I start experiments I set bootloacer start addres 0x3ACO00 and size 0x5000. When I enable loggin this size was insuficcent and I change start address to 0x37C00 and size 0x8000

[Roger Clark]

Ok. I will try to find the post where the application start address was discussed.

BTW. I presume, you still cant get it to work